Static Public Member Functions
static bool	SmoothMoveFloat1 (float &src, const float dest, const float fMaxStep)
	change src from src to dest, by a maximum of fMaxStep. More...

static bool	SmoothMoveAngle1 (float &src, const float dest, const float fMaxStep)
	change src from src to dest, by a maximum of fMaxStep. More...

static bool	SmoothMoveVec3 (Vector3 *result, const Vector3 &vPosTarget, const Vector3 &vPos, FLOAT fIncrease, FLOAT fTolerance)
	linearly (smoothly) move vPos to vPosTarget by the amount fIncrease return true if we have reached the target. More...

static float	ToStandardAngle (float fAngle)
	make sure that the angle is in the range (-Pi,Pi]

static bool	MatchString (const std::string &matchPattern, const std::string &matchStr)
	check if the matchStr matches the string pattern in matchPattern More...

static bool	ComputeFacingTarget (const Vector3 &target, const Vector3 &source, FLOAT &fFacing)
	facing target in xz plane fFacing: [out] it is in the range [0, 2PI] return true if target!=source(a valid facing can be computed)

static int	Round (float fValue)
	get the closest integer near the specified float number. More...

static float	MinVec3 (const Vector3 &v)
	Returns MIN(x, y, z);.

static float	MaxVec3 (const Vector3 &v)
	Returns MAX(x, y, z);.

template<class T >
static bool	CompareXZ (const T &a, const T &b)
	return true if equal. More...

template<class T >
static bool	CompareXZ (const T &a, const T &b, float epsilon)
	return true if equal. More...

static void	GetMatrixScaling (const Matrix4 &globalMat, float fScalingX, float fScalingY, float *fScalingZ)
	Get the scaling factor from globalMat. More...

static Matrix4 *	CreateBillboardMatrix (Matrix4 pOut, const Matrix4 matModelview, const Vector3 *vBillboardPos, bool bAxisAligned=false)
	create a billboard matrix More...

static void	CameraRotMatrixYawPitch (Matrix4 &out, float fYaw, float fPitch)

Member Function Documentation

§ CompareXZ() [1/2]

template<class T >

static bool ParaEngine::CMath::CompareXZ	(	const T &	a,
		const T &	b
	)

inlinestatic

return true if equal.

T is a 3D vector, such as Vector3

§ CompareXZ() [2/2]

template<class T >

static bool ParaEngine::CMath::CompareXZ	(	const T &	a,
		const T &	b,
		float	epsilon
	)

inlinestatic

return true if equal.

T is a 3D vector, such as Vector3

§ CreateBillboardMatrix()

static Matrix4* ParaEngine::CMath::CreateBillboardMatrix	(	Matrix4 *	pOut,
		const Matrix4 *	matModelview,
		const Vector3 *	vBillboardPos,
		bool	bAxisAligned = `false`
	)

static

create a billboard matrix

Parameters

pOut	[out], the output billboard matrix
matModelview	the current model view matrix. if NULL, the current model and view matrix on the global stack is used
vBillboardPos	the billboard position in model space. if NULL, (0,0,0) is used.
bAxisAligned	if true, it will create a billboard with Y (up) axis fixed. Default to false.

Returns: pOut is returned.

§ GetMatrixScaling()

static void ParaEngine::CMath::GetMatrixScaling	(	const Matrix4 &	globalMat,
		float *	fScalingX,
		float *	fScalingY,
		float *	fScalingZ
	)

static

Get the scaling factor from globalMat.

since we need to create separate physics mesh with different scaling factors even for the same mesh model. it is assumed that components of globalMat satisfies the following equation: |(globalMat._11, globalMat._12, globalMat._13)| = 1; |(globalMat._21, globalMat._22, globalMat._23)| = 1; |(globalMat._31, globalMat._32, globalMat._33)| = 1;

Parameters

globalMat	the input matrix
fScalingX	[out] maybe NULL
fScalingY	[out] maybe NULL
fScalingZ	[out] maybe NULL

§ MatchString()

static bool ParaEngine::CMath::MatchString	(	const std::string &	matchPattern,
		const std::string &	matchStr
	)

static

check if the matchStr matches the string pattern in matchPattern

Parameters

matchPattern	the match pattern. It may end with "" in which case "" will match any character(s). e.g "Li*" will match both "LiXizhi" and "LiTC", whereas "Li" will only match "Li"
matchStr	the match string.

Returns: : return true if the two string matches.

§ Round()

static int ParaEngine::CMath::Round ( float fValue )

inlinestatic

get the closest integer near the specified float number.

E.g. Round(1.49)==1, Round(1.51)==2, ToInt(

§ SmoothMoveAngle1()

static bool ParaEngine::CMath::SmoothMoveAngle1	(	float &	src,
		const float	dest,
		const float	fMaxStep
	)

static

change src from src to dest, by a maximum of fMaxStep.

If dest has been reached, return true; otherwise return false.

§ SmoothMoveFloat1()

static bool ParaEngine::CMath::SmoothMoveFloat1	(	float &	src,
		const float	dest,
		const float	fMaxStep
	)

static

change src from src to dest, by a maximum of fMaxStep.

If dest has been reached, return true; otherwise return false.

§ SmoothMoveVec3()

static bool ParaEngine::CMath::SmoothMoveVec3	(	Vector3 *	result,
		const Vector3 &	vPosTarget,
		const Vector3 &	vPos,
		FLOAT	fIncrease,
		FLOAT	fTolerance
	)

static

linearly (smoothly) move vPos to vPosTarget by the amount fIncrease return true if we have reached the target.

if the distance between target and the pos is within fTolerance, result is set to target

The documentation for this class was generated from the following file:

Client/trunk/ParaEngineClient/Engine/MathLib.h

Static Public Member Functions

Member Function Documentation

§ CompareXZ() [1/2]

§ CompareXZ() [2/2]

§ CreateBillboardMatrix()

§ GetMatrixScaling()

§ MatchString()

§ Round()

§ SmoothMoveAngle1()

§ SmoothMoveFloat1()

§ SmoothMoveVec3()